145425664 has 18 divisors (see below), whose sum is σ = 290283770. Its totient is φ = 72712704.

The previous prime is 145425653. The next prime is 145425673. The reversal of 145425664 is 466524541.

It can be written as a sum of positive squares in only one way, i.e., 120824064 + 24601600 = 10992^2 + 4960^2 .

It is a super-2 number, since 2×145425664² = 42297247499681792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283779 + ... + 284290.

Almost surely, 2^145425664 is an apocalyptic number.

It is an amenable number.

145425664 is a deficient number, since it is larger than the sum of its proper divisors (144858106).

145425664 is an frugal number, since it uses more digits than its factorization.

145425664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568085 (or 568071 counting only the distinct ones).

The product of its digits is 115200, while the sum is 37.

The square root of 145425664 is about 12059.2563618160. The cubic root of 145425664 is about 525.8723685186.

The spelling of 145425664 in words is "one hundred forty-five million, four hundred twenty-five thousand, six hundred sixty-four".