1201553325 has 96 divisors (see below), whose sum is σ = 2546860800. Its totient is φ = 544008960.

The previous prime is 1201553321. The next prime is 1201553333. The reversal of 1201553325 is 5233551021.

It is a happy number.

1201553325 is a `hidden beast` number, since 120 + 1 + 5 + 533 + 2 + 5 = 666.

It is not a de Polignac number, because 1201553325 - 2² = 1201553321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201553321) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 513859 + ... + 516191.

It is an arithmetic number, because the mean of its divisors is an integer number (26529800).

Almost surely, 2^1201553325 is an apocalyptic number.

1201553325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1201553325 is an abundant number, since it is smaller than the sum of its proper divisors (1345307475).

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

1201553325 is a wasteful number, since it uses less digits than its factorization.

1201553325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2468 (or 2457 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 1201553325 is about 34663.4292158176. The cubic root of 1201553325 is about 1063.1168865190.

The spelling of 1201553325 in words is "one billion, two hundred one million, five hundred fifty-three thousand, three hundred twenty-five".