25000038157 has 4 divisors (see below), whose sum is σ = 25301243520. Its totient is φ = 24698832796.

The previous prime is 25000038113. The next prime is 25000038181. The reversal of 25000038157 is 75183000052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25000038157 - 2²³ = 24991649549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25000038187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150602557 + ... + 150602722.

It is an arithmetic number, because the mean of its divisors is an integer number (6325310880).

Almost surely, 2^25000038157 is an apocalyptic number.

It is an amenable number.

25000038157 is a deficient number, since it is larger than the sum of its proper divisors (301205363).

25000038157 is an equidigital number, since it uses as much as digits as its factorization.

25000038157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301205362.

The product of its (nonzero) digits is 8400, while the sum is 31.

The spelling of 25000038157 in words is "twenty-five billion, thirty-eight thousand, one hundred fifty-seven".