25333440137 has 16 divisors (see below), whose sum is σ = 27998006400. Its totient is φ = 22799960832.

The previous prime is 25333440133. The next prime is 25333440151. The reversal of 25333440137 is 73104433352.

It is a cyclic number.

It is not a de Polignac number, because 25333440137 - 2² = 25333440133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25333440097 and 25333440106.

It is not an unprimeable number, because it can be changed into a prime (25333440131) 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, 1771538 + ... + 1785780.

It is an arithmetic number, because the mean of its divisors is an integer number (1749875400).

Almost surely, 2^25333440137 is an apocalyptic number.

It is an amenable number.

25333440137 is a deficient number, since it is larger than the sum of its proper divisors (2664566263).

25333440137 is a wasteful number, since it uses less digits than its factorization.

25333440137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18832.

The product of its (nonzero) digits is 90720, while the sum is 35.

Adding to 25333440137 its reverse (73104433352), we get a palindrome (98437873489).

The spelling of 25333440137 in words is "twenty-five billion, three hundred thirty-three million, four hundred forty thousand, one hundred thirty-seven".