25946431 has 6 divisors (see below), whose sum is σ = 30182640. Its totient is φ = 22239756.

The previous prime is 25946429. The next prime is 25946441. The reversal of 25946431 is 13464952.

It is a happy number.

It is not a de Polignac number, because 25946431 - 2¹ = 25946429 is a prime.

It is a super-2 number, since 2×25946431² = 1346434563275522, 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 (25946441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 264711 + ... + 264808.

It is an arithmetic number, because the mean of its divisors is an integer number (5030440).

Almost surely, 2^25946431 is an apocalyptic number.

25946431 is a deficient number, since it is larger than the sum of its proper divisors (4236209).

25946431 is an equidigital number, since it uses as much as digits as its factorization.

25946431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529533 (or 529526 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 25946431 is about 5093.7639324963. The cubic root of 25946431 is about 296.0460080360.

It can be divided in two parts, 2594 and 6431, that added together give a square (9025 = 95²).

The spelling of 25946431 in words is "twenty-five million, nine hundred forty-six thousand, four hundred thirty-one".