25342631 has 4 divisors (see below), whose sum is σ = 26833392. Its totient is φ = 23851872.

The previous prime is 25342627. The next prime is 25342651. The reversal of 25342631 is 13624352.

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 25342631 - 2² = 25342627 is a prime.

It is a super-2 number, since 2×25342631² = 1284497892004322, 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 25342631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25342651) 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, 745355 + ... + 745388.

It is an arithmetic number, because the mean of its divisors is an integer number (6708348).

Almost surely, 2^25342631 is an apocalyptic number.

25342631 is a deficient number, since it is larger than the sum of its proper divisors (1490761).

25342631 is a wasteful number, since it uses less digits than its factorization.

25342631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490760.

The product of its digits is 4320, while the sum is 26.

The square root of 25342631 is about 5034.1465016426. The cubic root of 25342631 is about 293.7315294860.

Adding to 25342631 its reverse (13624352), we get a palindrome (38966983).

The spelling of 25342631 in words is "twenty-five million, three hundred forty-two thousand, six hundred thirty-one".