25013131 has 8 divisors (see below), whose sum is σ = 29386224. Its totient is φ = 20989920.

The previous prime is 25013123. The next prime is 25013159. The reversal of 25013131 is 13131052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25013131 - 2³ = 25013123 is a prime.

It is a super-2 number, since 2×25013131² = 1251313444846322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25013431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87316 + ... + 87601.

It is an arithmetic number, because the mean of its divisors is an integer number (3673278).

Almost surely, 2^25013131 is an apocalyptic number.

25013131 is a deficient number, since it is larger than the sum of its proper divisors (4373093).

25013131 is a wasteful number, since it uses less digits than its factorization.

25013131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174941.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 25013131 is about 5001.3129276221. The cubic root of 25013131 is about 292.4529585635.

Adding to 25013131 its reverse (13131052), we get a palindrome (38144183).

The spelling of 25013131 in words is "twenty-five million, thirteen thousand, one hundred thirty-one".