157278525 has 12 divisors (see below), whose sum is σ = 260033952. Its totient is φ = 83881840.

The previous prime is 157278487. The next prime is 157278533. The reversal of 157278525 is 525872751.

It is not a de Polignac number, because 157278525 - 2⁶ = 157278461 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its 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 (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1048449 + ... + 1048598.

It is an arithmetic number, because the mean of its divisors is an integer number (21669496).

Almost surely, 2^157278525 is an apocalyptic number.

157278525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

157278525 is a deficient number, since it is larger than the sum of its proper divisors (102755427).

157278525 is a wasteful number, since it uses less digits than its factorization.

157278525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2097060 (or 2097055 counting only the distinct ones).

The product of its digits is 196000, while the sum is 42.

The square root of 157278525 is about 12541.0735186427. The cubic root of 157278525 is about 539.7878968100.

The spelling of 157278525 in words is "one hundred fifty-seven million, two hundred seventy-eight thousand, five hundred twenty-five".