1252905 has 16 divisors (see below), whose sum is σ = 2026944. Its totient is φ = 660800.

The previous prime is 1252903. The next prime is 1252913. The reversal of 1252905 is 5092521.

It is not a de Polignac number, because 1252905 - 2¹ = 1252903 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1252903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1102 + ... + 1928.

It is an arithmetic number, because the mean of its divisors is an integer number (126684).

2^1252905 is an apocalyptic number.

1252905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1252905 is a deficient number, since it is larger than the sum of its proper divisors (774039).

1252905 is a wasteful number, since it uses less digits than its factorization.

1252905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1252905 is about 1119.3323903113. The cubic root of 1252905 is about 107.8051183772.

The spelling of 1252905 in words is "one million, two hundred fifty-two thousand, nine hundred five".