11129857425 has 72 divisors (see below), whose sum is σ = 20349114240. Its totient is φ = 5813596800.

The previous prime is 11129857391. The next prime is 11129857477. The reversal of 11129857425 is 52475892111.

It is not a de Polignac number, because 11129857425 - 2¹⁶ = 11129791889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2726536 + ... + 2730614.

Almost surely, 2^11129857425 is an apocalyptic number.

11129857425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11129857425 is a deficient number, since it is larger than the sum of its proper divisors (9219256815).

11129857425 is a wasteful number, since it uses less digits than its factorization.

11129857425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4343 (or 4335 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The spelling of 11129857425 in words is "eleven billion, one hundred twenty-nine million, eight hundred fifty-seven thousand, four hundred twenty-five".