145152025 has 6 divisors (see below), whose sum is σ = 179988542. Its totient is φ = 116121600.

The previous prime is 145152023. The next prime is 145152037. The reversal of 145152025 is 520251541.

It can be written as a sum of positive squares in 3 ways, for example, as 18386944 + 126765081 = 4288^2 + 11259^2 .

It is not a de Polignac number, because 145152025 - 2¹ = 145152023 is a prime.

It is a super-2 number, since 2×145152025² = 42138220723201250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 5806081 = 145152025 / (1 + 4 + 5 + 1 + 5 + 2 + 0 + 2 + 5).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145152023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2903016 + ... + 2903065.

Almost surely, 2^145152025 is an apocalyptic number.

It is an amenable number.

145152025 is a deficient number, since it is larger than the sum of its proper divisors (34836517).

145152025 is an equidigital number, since it uses as much as digits as its factorization.

145152025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5806091 (or 5806086 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 145152025 is about 12047.9054196155. The cubic root of 145152025 is about 525.5423269585.

The spelling of 145152025 in words is "one hundred forty-five million, one hundred fifty-two thousand, twenty-five".