25458983545 has 16 divisors (see below), whose sum is σ = 30844013760. Its totient is φ = 20172398400.

The previous prime is 25458983509. The next prime is 25458983591. The reversal of 25458983545 is 54538985452.

It is a de Polignac number, because none of the positive numbers 2^k-25458983545 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25458983545.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249090 + ... + 336100.

It is an arithmetic number, because the mean of its divisors is an integer number (1927750860).

Almost surely, 2^25458983545 is an apocalyptic number.

It is an amenable number.

25458983545 is a deficient number, since it is larger than the sum of its proper divisors (5385030215).

25458983545 is a wasteful number, since it uses less digits than its factorization.

25458983545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87576.

The product of its digits is 34560000, while the sum is 58.

The spelling of 25458983545 in words is "twenty-five billion, four hundred fifty-eight million, nine hundred eighty-three thousand, five hundred forty-five".