15252905 has 4 divisors (see below), whose sum is σ = 18303492. Its totient is φ = 12202320.

The previous prime is 15252883. The next prime is 15252907. The reversal of 15252905 is 50925251.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8637721 + 6615184 = 2939^2 + 2572^2 .

It is not a de Polignac number, because 15252905 - 2¹⁸ = 14990761 is a prime.

It is a super-2 number, since 2×15252905² = 465302221878050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15252907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1525286 + ... + 1525295.

It is an arithmetic number, because the mean of its divisors is an integer number (4575873).

Almost surely, 2^15252905 is an apocalyptic number.

It is an amenable number.

15252905 is a deficient number, since it is larger than the sum of its proper divisors (3050587).

15252905 is an equidigital number, since it uses as much as digits as its factorization.

15252905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3050586.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 15252905 is about 3905.4967673780. The cubic root of 15252905 is about 247.9995284851. Note that the first 3 decimals are identical.

The spelling of 15252905 in words is "fifteen million, two hundred fifty-two thousand, nine hundred five".