225001257 has 16 divisors (see below), whose sum is σ = 327508608. Its totient is φ = 136563840.

The previous prime is 225001237. The next prime is 225001291. The reversal of 225001257 is 752100522.

It is not a de Polignac number, because 225001257 - 2⁷ = 225001129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225001207) 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, 36669 + ... + 42362.

It is an arithmetic number, because the mean of its divisors is an integer number (20469288).

Almost surely, 2^225001257 is an apocalyptic number.

It is an amenable number.

225001257 is a deficient number, since it is larger than the sum of its proper divisors (102507351).

225001257 is a wasteful number, since it uses less digits than its factorization.

225001257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79120.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 225001257 is about 15000.0418999415. The cubic root of 225001257 is about 608.2213321964.

Adding to 225001257 its reverse (752100522), we get a palindrome (977101779).

The spelling of 225001257 in words is "two hundred twenty-five million, one thousand, two hundred fifty-seven".