25412021451 has 6 divisors (see below), whose sum is σ = 36706253220. Its totient is φ = 16941347628.

The previous prime is 25412021423. The next prime is 25412021497. The reversal of 25412021451 is 15412021452.

It is a happy number.

25412021451 is a `hidden beast` number, since 2 + 5 + 4 + 1 + 202 + 1 + 451 = 666.

It is not a de Polignac number, because 25412021451 - 2⁶ = 25412021387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25412021051) 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, 1411778961 + ... + 1411778978.

It is an arithmetic number, because the mean of its divisors is an integer number (6117708870).

Almost surely, 2^25412021451 is an apocalyptic number.

25412021451 is a deficient number, since it is larger than the sum of its proper divisors (11294231769).

25412021451 is a wasteful number, since it uses less digits than its factorization.

25412021451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2823557945 (or 2823557942 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Subtracting from 25412021451 its reverse (15412021452), we obtain a palindrome (9999999999).

The spelling of 25412021451 in words is "twenty-five billion, four hundred twelve million, twenty-one thousand, four hundred fifty-one".