1252895019 has 16 divisors (see below), whose sum is σ = 1772928000. Its totient is φ = 784292480.

The previous prime is 1252895009. The next prime is 1252895023. The reversal of 1252895019 is 9105982521.

It is a cyclic number.

It is not a de Polignac number, because 1252895019 - 2¹² = 1252890923 is a prime.

It is a super-2 number, since 2×1252895019² = 3139491857270020722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1252895009) 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, 6519 + ... + 50480.

It is an arithmetic number, because the mean of its divisors is an integer number (110808000).

Almost surely, 2^1252895019 is an apocalyptic number.

1252895019 is a deficient number, since it is larger than the sum of its proper divisors (520032981).

1252895019 is a wasteful number, since it uses less digits than its factorization.

1252895019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57450.

The product of its (nonzero) digits is 64800, while the sum is 42.

The square root of 1252895019 is about 35396.2571326405. The cubic root of 1252895019 is about 1078.0483210763.

The spelling of 1252895019 in words is "one billion, two hundred fifty-two million, eight hundred ninety-five thousand, nineteen".