225142788 has 24 divisors (see below), whose sum is σ = 565743808. Its totient is φ = 69274656.

The previous prime is 225142777. The next prime is 225142793. The reversal of 225142788 is 887241522.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 721456 + ... + 721767.

Almost surely, 2^225142788 is an apocalyptic number.

It is an amenable number.

225142788 is an abundant number, since it is smaller than the sum of its proper divisors (340601020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225142788 is a wasteful number, since it uses less digits than its factorization.

225142788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443243 (or 1443241 counting only the distinct ones).

The product of its digits is 71680, while the sum is 39.

The square root of 225142788 is about 15004.7588451131. The cubic root of 225142788 is about 608.3488338996.

The spelling of 225142788 in words is "two hundred twenty-five million, one hundred forty-two thousand, seven hundred eighty-eight".