1400389051525 has 24 divisors (see below), whose sum is σ = 1785399977088. Its totient is φ = 1088953200000.

The previous prime is 1400389051517. The next prime is 1400389051549. The reversal of 1400389051525 is 5251509830041.

It is not a de Polignac number, because 1400389051525 - 2³ = 1400389051517 is a prime.

It is a super-2 number, since 2×1400389051525² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2242951 + ... + 2798500.

It is an arithmetic number, because the mean of its divisors is an integer number (74391665712).

Almost surely, 2^{1400389051525} is an apocalyptic number.

It is an amenable number.

1400389051525 is a deficient number, since it is larger than the sum of its proper divisors (385010925563).

1400389051525 is a wasteful number, since it uses less digits than its factorization.

1400389051525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5041773 (or 5041768 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 43.

The spelling of 1400389051525 in words is "one trillion, four hundred billion, three hundred eighty-nine million, fifty-one thousand, five hundred twenty-five".