151987725 has 24 divisors (see below), whose sum is σ = 279208320. Its totient is φ = 81059760.

The previous prime is 151987723. The next prime is 151987777. The reversal of 151987725 is 527789151.

It is not a de Polignac number, because 151987725 - 2¹ = 151987723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151987721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111909 + ... + 113258.

It is an arithmetic number, because the mean of its divisors is an integer number (11633680).

Almost surely, 2^151987725 is an apocalyptic number.

151987725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

151987725 is a deficient number, since it is larger than the sum of its proper divisors (127220595).

151987725 is a wasteful number, since it uses less digits than its factorization.

151987725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225186 (or 225175 counting only the distinct ones).

The product of its digits is 176400, while the sum is 45.

The square root of 151987725 is about 12328.3301789010. The cubic root of 151987725 is about 533.6659632918.

The spelling of 151987725 in words is "one hundred fifty-one million, nine hundred eighty-seven thousand, seven hundred twenty-five".