25400275 has 6 divisors (see below), whose sum is σ = 31496372. Its totient is φ = 20320200.

The previous prime is 25400269. The next prime is 25400281. The reversal of 25400275 is 57200452.

It is an interprime number because it is at equal distance from previous prime (25400269) and next prime (25400281).

It is not a de Polignac number, because 25400275 - 2⁷ = 25400147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 1016011 = 25400275 / (2 + 5 + 4 + 0 + 0 + 2 + 7 + 5).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 507981 + ... + 508030.

Almost surely, 2^25400275 is an apocalyptic number.

25400275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25400275 is a deficient number, since it is larger than the sum of its proper divisors (6096097).

25400275 is a wasteful number, since it uses less digits than its factorization.

25400275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016021 (or 1016016 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 25400275 is about 5039.8685498731. The cubic root of 25400275 is about 293.9540667438.

The spelling of 25400275 in words is "twenty-five million, four hundred thousand, two hundred seventy-five".