1400640325 has 12 divisors (see below), whose sum is σ = 1984907680. Its totient is φ = 960438960.

The previous prime is 1400640317. The next prime is 1400640331. The reversal of 1400640325 is 5230460041.

It is not a de Polignac number, because 1400640325 - 2³ = 1400640317 is a prime.

It is a super-2 number, since 2×1400640325² = 3923586640032211250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 1400640325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4001655 + ... + 4002004.

Almost surely, 2^1400640325 is an apocalyptic number.

It is an amenable number.

1400640325 is a deficient number, since it is larger than the sum of its proper divisors (584267355).

1400640325 is an equidigital number, since it uses as much as digits as its factorization.

1400640325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8003676 (or 8003671 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1400640325 is about 37425.1295922940. The cubic root of 1400640325 is about 1118.8594695373.

The spelling of 1400640325 in words is "one billion, four hundred million, six hundred forty thousand, three hundred twenty-five".