13407977225 has 6 divisors (see below), whose sum is σ = 16625891790. Its totient is φ = 10726381760.

The previous prime is 13407977207. The next prime is 13407977257. The reversal of 13407977225 is 52277970431.

It can be written as a sum of positive squares in 3 ways, for example, as 85969984 + 13322007241 = 9272^2 + 115421^2 .

It is not a de Polignac number, because 13407977225 - 2⁶ = 13407977161 is a prime.

It is a super-2 number, since 2×13407977225² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13407977225.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 268159520 + ... + 268159569.

It is an arithmetic number, because the mean of its divisors is an integer number (2770981965).

Almost surely, 2^13407977225 is an apocalyptic number.

It is an amenable number.

13407977225 is a deficient number, since it is larger than the sum of its proper divisors (3217914565).

13407977225 is an equidigital number, since it uses as much as digits as its factorization.

13407977225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536319099 (or 536319094 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 47.

The spelling of 13407977225 in words is "thirteen billion, four hundred seven million, nine hundred seventy-seven thousand, two hundred twenty-five".