11725145840 has 40 divisors (see below), whose sum is σ = 27266567328. Its totient is φ = 4689094400.

The previous prime is 11725145797. The next prime is 11725145857. The reversal of 11725145840 is 4854152711.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 11725145794 and 11725145803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476069 + ... + 500091.

Almost surely, 2^11725145840 is an apocalyptic number.

11725145840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11725145840 is an abundant number, since it is smaller than the sum of its proper divisors (15541421488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11725145840 is a wasteful number, since it uses less digits than its factorization.

11725145840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30137 (or 30131 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 38.

The spelling of 11725145840 in words is "eleven billion, seven hundred twenty-five million, one hundred forty-five thousand, eight hundred forty".