25113861 has 32 divisors (see below), whose sum is σ = 39909120. Its totient is φ = 15567552.

The previous prime is 25113857. The next prime is 25113871. The reversal of 25113861 is 16831152.

It is not a de Polignac number, because 25113861 - 2² = 25113857 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25113821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22431 + ... + 23523.

It is an arithmetic number, because the mean of its divisors is an integer number (1247160).

Almost surely, 2^25113861 is an apocalyptic number.

It is an amenable number.

25113861 is a deficient number, since it is larger than the sum of its proper divisors (14795259).

25113861 is a wasteful number, since it uses less digits than its factorization.

25113861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162 (or 1156 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 25113861 is about 5011.3731651115. The cubic root of 25113861 is about 292.8450103809.

The spelling of 25113861 in words is "twenty-five million, one hundred thirteen thousand, eight hundred sixty-one".