25402041 has 18 divisors (see below), whose sum is σ = 42683082. Its totient is φ = 14515200.

The previous prime is 25402033. The next prime is 25402073. The reversal of 25402041 is 14020452.

It can be written as a sum of positive squares in only one way, i.e., 25401600 + 441 = 5040^2 + 21^2 .

It is not a de Polignac number, because 25402041 - 2³ = 25402033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25402021) 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 17 ways as a sum of consecutive naturals, for example, 28360 + ... + 29241.

Almost surely, 2^25402041 is an apocalyptic number.

25402041 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25402041 is a deficient number, since it is larger than the sum of its proper divisors (17281041).

25402041 is a wasteful number, since it uses less digits than its factorization.

25402041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57621 (or 57611 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 25402041 is about 5040.0437498101. The cubic root of 25402041 is about 293.9608791484.

Adding to 25402041 its reverse (14020452), we get a palindrome (39422493).

The spelling of 25402041 in words is "twenty-five million, four hundred two thousand, forty-one".