1401836625 has 192 divisors, whose sum is σ = 3161733120. Its totient is φ = 605361600.

The previous prime is 1401836621. The next prime is 1401836627. The reversal of 1401836625 is 5266381041.

It is a happy number.

1401836625 is a `hidden beast` number, since 14 + 0 + 18 + 3 + 6 + 625 = 666.

It is not a de Polignac number, because 1401836625 - 2² = 1401836621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1401836625.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401836621) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 4039702 + ... + 4040048.

It is an arithmetic number, because the mean of its divisors is an integer number (16467360).

Almost surely, 2^1401836625 is an apocalyptic number.

1401836625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1401836625 is an abundant number, since it is smaller than the sum of its proper divisors (1759896495).

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

1401836625 is an equidigital number, since it uses as much as digits as its factorization.

1401836625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1401836625 is about 37441.1087576209. The cubic root of 1401836625 is about 1119.1779216690.

The spelling of 1401836625 in words is "one billion, four hundred one million, eight hundred thirty-six thousand, six hundred twenty-five".