157225464 has 72 divisors (see below), whose sum is σ = 468074880. Its totient is φ = 47641440.

The previous prime is 157225463. The next prime is 157225553. The reversal of 157225464 is 464522751.

It is a happy number.

157225464 is a `hidden beast` number, since 1 + 572 + 25 + 4 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157225463) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 312 + ... + 17735.

It is an arithmetic number, because the mean of its divisors is an integer number (6501040).

Almost surely, 2^157225464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157225464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234037440).

157225464 is an abundant number, since it is smaller than the sum of its proper divisors (310849416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157225464 is a wasteful number, since it uses less digits than its factorization.

157225464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18081 (or 18063 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 157225464 is about 12538.9578514325. The cubic root of 157225464 is about 539.7271872987.

The spelling of 157225464 in words is "one hundred fifty-seven million, two hundred twenty-five thousand, four hundred sixty-four".