25123455045 has 32 divisors (see below), whose sum is σ = 48099609600. Its totient is φ = 12368469312.

The previous prime is 25123455043. The next prime is 25123455061. The reversal of 25123455045 is 54055432152.

25123455045 is a `hidden beast` number, since 25 + 12 + 34 + 550 + 45 = 666.

It is not a de Polignac number, because 25123455045 - 2¹ = 25123455043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25123455043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7155925 + ... + 7159434.

It is an arithmetic number, because the mean of its divisors is an integer number (1503112800).

Almost surely, 2^25123455045 is an apocalyptic number.

It is an amenable number.

25123455045 is a deficient number, since it is larger than the sum of its proper divisors (22976154555).

25123455045 is a wasteful number, since it uses less digits than its factorization.

25123455045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14315386 (or 14315380 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

Adding to 25123455045 its reverse (54055432152), we get a palindrome (79178887197).

The spelling of 25123455045 in words is "twenty-five billion, one hundred twenty-three million, four hundred fifty-five thousand, forty-five".