25432404453 has 12 divisors (see below), whose sum is σ = 36756391308. Its totient is φ = 16945384320.

The previous prime is 25432404407. The next prime is 25432404463. The reversal of 25432404453 is 35440423452.

25432404453 is a `hidden beast` number, since 2 + 543 + 24 + 0 + 44 + 53 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21625761249 + 3806643204 = 147057^2 + 61698^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25432404453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25432404463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 779118 + ... + 811103.

It is an arithmetic number, because the mean of its divisors is an integer number (3063032609).

Almost surely, 2^25432404453 is an apocalyptic number.

It is an amenable number.

25432404453 is a deficient number, since it is larger than the sum of its proper divisors (11323986855).

25432404453 is a wasteful number, since it uses less digits than its factorization.

25432404453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592004 (or 1592001 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 36.

The spelling of 25432404453 in words is "twenty-five billion, four hundred thirty-two million, four hundred four thousand, four hundred fifty-three".