25400650 has 24 divisors (see below), whose sum is σ = 51541344. Its totient is φ = 9236400.

The previous prime is 25400647. The next prime is 25400651. The reversal of 25400650 is 5600452.

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

It is not an unprimeable number, because it can be changed into a prime (25400651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22542 + ... + 23641.

It is an arithmetic number, because the mean of its divisors is an integer number (2147556).

Almost surely, 2^25400650 is an apocalyptic number.

25400650 is an abundant number, since it is smaller than the sum of its proper divisors (26140694).

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

25400650 is a wasteful number, since it uses less digits than its factorization.

25400650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46206 (or 46201 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 25400650 is about 5039.9057530871. The cubic root of 25400650 is about 293.9555133453.

Subtracting from 25400650 its sum of digits (22), we obtain a triangular number (25400628 = T₇₁₂₇).

The spelling of 25400650 in words is "twenty-five million, four hundred thousand, six hundred fifty".