25400464 has 30 divisors (see below), whose sum is σ = 51463286. Its totient is φ = 12144000.

The previous prime is 25400449. The next prime is 25400467. The reversal of 25400464 is 46400452.

It can be written as a sum of positive squares in only one way, i.e., 22014864 + 3385600 = 4692^2 + 1840^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25400467) 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, 6964 + ... + 9964.

Almost surely, 2^25400464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25400464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25731643).

25400464 is an abundant number, since it is smaller than the sum of its proper divisors (26062822).

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

25400464 is a wasteful number, since it uses less digits than its factorization.

25400464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3055 (or 3026 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 25400464 is about 5039.8873003273. The cubic root of 25400464 is about 293.9547958328.

The spelling of 25400464 in words is "twenty-five million, four hundred thousand, four hundred sixty-four".