225140397 has 4 divisors (see below), whose sum is σ = 300187200. Its totient is φ = 150093596.

The previous prime is 225140359. The next prime is 225140407. The reversal of 225140397 is 793041522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 225140397 - 2⁸ = 225140141 is a prime.

It is a super-2 number, since 2×225140397² = 101376396722635218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225140497) 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, 37523397 + ... + 37523402.

It is an arithmetic number, because the mean of its divisors is an integer number (75046800).

Almost surely, 2^225140397 is an apocalyptic number.

It is an amenable number.

225140397 is a deficient number, since it is larger than the sum of its proper divisors (75046803).

225140397 is an equidigital number, since it uses as much as digits as its factorization.

225140397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75046802.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 225140397 is about 15004.6791701789. The cubic root of 225140397 is about 608.3466803519.

The spelling of 225140397 in words is "two hundred twenty-five million, one hundred forty thousand, three hundred ninety-seven".