151990725 has 24 divisors (see below), whose sum is σ = 251716032. Its totient is φ = 80924800.

The previous prime is 151990703. The next prime is 151990757. The reversal of 151990725 is 527099151.

It is not a de Polignac number, because 151990725 - 2¹⁵ = 151957957 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55744 + ... + 58406.

It is an arithmetic number, because the mean of its divisors is an integer number (10488168).

Almost surely, 2^151990725 is an apocalyptic number.

151990725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

151990725 is a deficient number, since it is larger than the sum of its proper divisors (99725307).

151990725 is a wasteful number, since it uses less digits than its factorization.

151990725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3437 (or 3432 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 39.

The square root of 151990725 is about 12328.4518492794. The cubic root of 151990725 is about 533.6694745125.

The spelling of 151990725 in words is "one hundred fifty-one million, nine hundred ninety thousand, seven hundred twenty-five".