12495405 has 32 divisors (see below), whose sum is σ = 21732480. Its totient is φ = 6094080.

The previous prime is 12495349. The next prime is 12495421. The reversal of 12495405 is 50459421.

It is not a de Polignac number, because 12495405 - 2⁷ = 12495277 is a prime.

It is a super-2 number, since 2×12495405² = 312270292228050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26875 + ... + 27335.

It is an arithmetic number, because the mean of its divisors is an integer number (679140).

Almost surely, 2^12495405 is an apocalyptic number.

12495405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12495405 is a deficient number, since it is larger than the sum of its proper divisors (9237075).

12495405 is a wasteful number, since it uses less digits than its factorization.

12495405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 12495405 is about 3534.8840150704. The cubic root of 12495405 is about 232.0510007278.

The spelling of 12495405 in words is "twelve million, four hundred ninety-five thousand, four hundred five".