1951425 has 72 divisors (see below), whose sum is σ = 4240800. Its totient is φ = 876960.

The previous prime is 1951403. The next prime is 1951429. The reversal of 1951425 is 5241591.

It is not a de Polignac number, because 1951425 - 2⁹ = 1950913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1951429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 33046 + ... + 33104.

It is an arithmetic number, because the mean of its divisors is an integer number (58900).

2^1951425 is an apocalyptic number.

1951425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1951425 is an abundant number, since it is smaller than the sum of its proper divisors (2289375).

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

1951425 is a wasteful number, since it uses less digits than its factorization.

1951425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92 (or 74 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 1951425 is about 1396.9341430433. The cubic root of 1951425 is about 124.9637228061.

The spelling of 1951425 in words is "one million, nine hundred fifty-one thousand, four hundred twenty-five".