25344630561 has 16 divisors (see below), whose sum is σ = 34626892608. Its totient is φ = 16479628800.

The previous prime is 25344630491. The next prime is 25344630569. The reversal of 25344630561 is 16503644352.

It is not a de Polignac number, because 25344630561 - 2¹⁷ = 25344499489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25344630569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 435210 + ... + 489996.

It is an arithmetic number, because the mean of its divisors is an integer number (2164180788).

Almost surely, 2^25344630561 is an apocalyptic number.

It is an amenable number.

25344630561 is a deficient number, since it is larger than the sum of its proper divisors (9282262047).

25344630561 is a wasteful number, since it uses less digits than its factorization.

25344630561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58592.

The product of its (nonzero) digits is 259200, while the sum is 39.

The spelling of 25344630561 in words is "twenty-five billion, three hundred forty-four million, six hundred thirty thousand, five hundred sixty-one".