25125931 has 4 divisors (see below), whose sum is σ = 25317864. Its totient is φ = 24934000.

The previous prime is 25125901. The next prime is 25125973. The reversal of 25125931 is 13952152.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25125931 - 2¹¹ = 25123883 is a prime.

It is a super-2 number, since 2×25125931² = 1262624817233522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25125931.

It is not an unprimeable number, because it can be changed into a prime (25125901) 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, 95770 + ... + 96031.

It is an arithmetic number, because the mean of its divisors is an integer number (6329466).

Almost surely, 2^25125931 is an apocalyptic number.

25125931 is a deficient number, since it is larger than the sum of its proper divisors (191933).

25125931 is a wasteful number, since it uses less digits than its factorization.

25125931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191932.

The product of its digits is 2700, while the sum is 28.

The square root of 25125931 is about 5012.5772811998. The cubic root of 25125931 is about 292.8919177198.

The spelling of 25125931 in words is "twenty-five million, one hundred twenty-five thousand, nine hundred thirty-one".