25400452 has 24 divisors (see below), whose sum is σ = 55419840. Its totient is φ = 9896160.

The previous prime is 25400449. The next prime is 25400467.

25400452 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40927 + ... + 41542.

It is an arithmetic number, because the mean of its divisors is an integer number (2309160).

Almost surely, 2^25400452 is an apocalyptic number.

25400452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25400452 is an abundant number, since it is smaller than the sum of its proper divisors (30019388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25400452 is a wasteful number, since it uses less digits than its factorization.

25400452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82491 (or 82489 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 25400452 is about 5039.8861098243. The cubic root of 25400452 is about 293.9547495415.

It can be divided in two parts, 25400 and 452, that added together give a palindrome (25852).

The spelling of 25400452 in words is "twenty-five million, four hundred thousand, four hundred fifty-two".