25291953 has 8 divisors (see below), whose sum is σ = 37469600. Its totient is φ = 16861284.

The previous prime is 25291951. The next prime is 25292017. The reversal of 25291953 is 35919252.

It is a happy number.

It is not a de Polignac number, because 25291953 - 2¹ = 25291951 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25291951) 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, 468343 + ... + 468396.

It is an arithmetic number, because the mean of its divisors is an integer number (4683700).

Almost surely, 2^25291953 is an apocalyptic number.

It is an amenable number.

25291953 is a deficient number, since it is larger than the sum of its proper divisors (12177647).

25291953 is an equidigital number, since it uses as much as digits as its factorization.

25291953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936748 (or 936742 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 25291953 is about 5029.1105575439. The cubic root of 25291953 is about 293.5356058677.

It can be divided in two parts, 25291 and 953, that added together give a square (26244 = 162²).

The spelling of 25291953 in words is "twenty-five million, two hundred ninety-one thousand, nine hundred fifty-three".