25402461 has 16 divisors (see below), whose sum is σ = 39755904. Its totient is φ = 14122944.

The previous prime is 25402459. The next prime is 25402499. The reversal of 25402461 is 16420452.

It is not a de Polignac number, because 25402461 - 2¹ = 25402459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25402261) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 15570 + ... + 17123.

It is an arithmetic number, because the mean of its divisors is an integer number (2484744).

Almost surely, 2^25402461 is an apocalyptic number.

25402461 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25402461 is a deficient number, since it is larger than the sum of its proper divisors (14353443).

25402461 is a wasteful number, since it uses less digits than its factorization.

25402461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32740.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 25402461 is about 5040.0854159429. The cubic root of 25402461 is about 293.9624992661.

Subtracting from 25402461 its reverse (16420452), we obtain a square (8982009 = 2997²).

The spelling of 25402461 in words is "twenty-five million, four hundred two thousand, four hundred sixty-one".