15225261 has 8 divisors (see below), whose sum is σ = 21000480. Its totient is φ = 9800112.

The previous prime is 15225253. The next prime is 15225269. The reversal of 15225261 is 16252251.

It is a happy number.

15225261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (15225253) and next prime (15225269).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15225261 - 2³ = 15225253 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15225269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87415 + ... + 87588.

It is an arithmetic number, because the mean of its divisors is an integer number (2625060).

Almost surely, 2^15225261 is an apocalyptic number.

It is an amenable number.

15225261 is a deficient number, since it is larger than the sum of its proper divisors (5775219).

15225261 is a wasteful number, since it uses less digits than its factorization.

15225261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175035.

The product of its digits is 1200, while the sum is 24.

The square root of 15225261 is about 3901.9560479329. The cubic root of 15225261 is about 247.8496150786.

The spelling of 15225261 in words is "fifteen million, two hundred twenty-five thousand, two hundred sixty-one".