25148631 has 4 divisors (see below), whose sum is σ = 33531512. Its totient is φ = 16765752.

The previous prime is 25148603. The next prime is 25148633. The reversal of 25148631 is 13684152.

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

It is not a de Polignac number, because 25148631 - 2⁷ = 25148503 is a prime.

It is a super-2 number, since 2×25148631² = 1264907282348322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25148633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4191436 + ... + 4191441.

It is an arithmetic number, because the mean of its divisors is an integer number (8382878).

Almost surely, 2^25148631 is an apocalyptic number.

25148631 is a deficient number, since it is larger than the sum of its proper divisors (8382881).

25148631 is an equidigital number, since it uses as much as digits as its factorization.

25148631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8382880.

The product of its digits is 5760, while the sum is 30.

The square root of 25148631 is about 5014.8410742515. The cubic root of 25148631 is about 292.9800954845.

The spelling of 25148631 in words is "twenty-five million, one hundred forty-eight thousand, six hundred thirty-one".