15245414257 has 4 divisors (see below), whose sum is σ = 15249701440. Its totient is φ = 15241127076.

The previous prime is 15245414227. The next prime is 15245414273. The reversal of 15245414257 is 75241454251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75241454251 = 19751 ⋅3809501.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15245414257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15245414227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2138253 + ... + 2145370.

It is an arithmetic number, because the mean of its divisors is an integer number (3812425360).

Almost surely, 2^15245414257 is an apocalyptic number.

It is an amenable number.

15245414257 is a deficient number, since it is larger than the sum of its proper divisors (4287183).

15245414257 is an equidigital number, since it uses as much as digits as its factorization.

15245414257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4287182.

The product of its digits is 224000, while the sum is 40.

The spelling of 15245414257 in words is "fifteen billion, two hundred forty-five million, four hundred fourteen thousand, two hundred fifty-seven".