1421409209625 has 96 divisors (see below), whose sum is σ = 2649252247200. Its totient is φ = 732642624000.

The previous prime is 1421409209609. The next prime is 1421409209641. The reversal of 1421409209625 is 5269029041241.

1421409209625 is a `hidden beast` number, since 1 + 4 + 2 + 14 + 0 + 9 + 2 + 0 + 9 + 625 = 666.

It is an interprime number because it is at equal distance from previous prime (1421409209609) and next prime (1421409209641).

It can be written as a sum of positive squares in 16 ways, for example, as 713367741321 + 708041468304 = 844611^2 + 841452^2 .

It is not a de Polignac number, because 1421409209625 - 2⁴ = 1421409209609 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 95 ways as a sum of consecutive naturals, for example, 6087535 + ... + 6316715.

It is an arithmetic number, because the mean of its divisors is an integer number (27596377575).

Almost surely, 2^{1421409209625} is an apocalyptic number.

1421409209625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1421409209625 is a deficient number, since it is larger than the sum of its proper divisors (1227843037575).

1421409209625 is a wasteful number, since it uses less digits than its factorization.

1421409209625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229388 (or 229375 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 1421409209625 in words is "one trillion, four hundred twenty-one billion, four hundred nine million, two hundred nine thousand, six hundred twenty-five".