13640246225 has 48 divisors (see below), whose sum is σ = 18148695552. Its totient is φ = 10133544960.

The previous prime is 13640246219. The next prime is 13640246231. The reversal of 13640246225 is 52264204631.

It is an interprime number because it is at equal distance from previous prime (13640246219) and next prime (13640246231).

It is a de Polignac number, because none of the positive numbers 2^k-13640246225 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20267489 + ... + 20268161.

It is an arithmetic number, because the mean of its divisors is an integer number (378097824).

Almost surely, 2^13640246225 is an apocalyptic number.

It is an amenable number.

13640246225 is a deficient number, since it is larger than the sum of its proper divisors (4508449327).

13640246225 is a wasteful number, since it uses less digits than its factorization.

13640246225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266 (or 1261 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The spelling of 13640246225 in words is "thirteen billion, six hundred forty million, two hundred forty-six thousand, two hundred twenty-five".