1901025 has 72 divisors (see below), whose sum is σ = 4178304. Its totient is φ = 806400.

The previous prime is 1901021. The next prime is 1901027. The reversal of 1901025 is 5201091.

1901025 = T₁₉₅ + T₁₉₆ + ... + T₂₆₅.

It is not a de Polignac number, because 1901025 - 2² = 1901021 is a prime.

It is a super-2 number, since 2×1901025² = 7227792101250, which contains 22 as substring.

1901025 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1900989 and 1901007.

It is not an unprimeable number, because it can be changed into a prime (1901021) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 26740 + ... + 26810.

It is an arithmetic number, because the mean of its divisors is an integer number (58032).

2^1901025 is an apocalyptic number.

1901025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1901025 is an abundant number, since it is smaller than the sum of its proper divisors (2277279).

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

1901025 is a wasteful number, since it uses less digits than its factorization.

1901025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 1901025 is about 1378.7766316558. The cubic root of 1901025 is about 123.8785013519.

The spelling of 1901025 in words is "one million, nine hundred one thousand, twenty-five".