145394425 has 12 divisors (see below), whose sum is σ = 196679376. Its totient is φ = 105741200.

The previous prime is 145394419. The next prime is 145394437. The reversal of 145394425 is 524493541.

145394425 = 2083² + 2084² + ... + 2115².

It is a happy number.

145394425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145394425 - 2⁵ = 145394393 is a prime.

It is a super-2 number, since 2×145394425² = 42279077642161250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 264079 + ... + 264628.

It is an arithmetic number, because the mean of its divisors is an integer number (16389948).

Almost surely, 2^145394425 is an apocalyptic number.

It is an amenable number.

145394425 is a deficient number, since it is larger than the sum of its proper divisors (51284951).

145394425 is a wasteful number, since it uses less digits than its factorization.

145394425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528728 (or 528723 counting only the distinct ones).

The product of its digits is 86400, while the sum is 37.

The square root of 145394425 is about 12057.9610631317. The cubic root of 145394425 is about 525.8347114713.

The spelling of 145394425 in words is "one hundred forty-five million, three hundred ninety-four thousand, four hundred twenty-five".